Navegar

Colección

Datos Estadísticas

Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte la política de Acceso Abierto del editor

Abstract:

The La Aguadita Formation crops out in the core of the Famatina Range (28°39'S) in the southern Central Andes and is interpreted as a relict of a synorogenic Ordovician clastic wedge developed in the retroarc of a collisional-subduction margin built along western Gondwana. This unit, formerly included within the Pampean (Early Cambrian) metamorphic complex, was recently attributed to the middle Ordovician on the basis of U-Pb SHRIMP dating on detrital zircons. La Aguadita Formation comprises two informal members, the lower one is composed of metarkoses with clastic to blastopsammitic textures, whereas the upper member consists of metapelites with subordinated thin-bedded metagraywackes. Mineralogical (XRD) and petrological analyses carried out for the rocks outcropping in Loma de Las Damas indicate that La Aguadita Formation underwent an incipient regional metamorphic event, in which the mineral blastesis was synchronous with the development of the S1, cleavage. According to the XRD study of the <2,μm fraction, the main mineral formed during this event was illite, with subordinate chlorite. Besides, the petrographic study evidences recrystallization processes in quartz and feldespate. The values obtained for the Kübler index of the metapelites correspond entirely to the anchizone (IK= 0.25-0.40 Δ°'2θ), indicating that the main tectono-metamorphic event took place at temperatures around 200-300 °C and depths of 6.5 to 10 km. The existence of blastic epidote and chlorite in some metarkoses and metagraywackes, together with their textural relationships denote a propilitic hydrothermal alteration episode that postdates the main tectono-thermal episode. The clay fraction of the metapelites contains -in addition to the main phyllosilicates- smectite, berthierine, vermiculite, and I/S and Chl/Vm mixed-layered minerals. This group of phyllosilicates is incompatible not only with the grade established for the main metamorphic event, but also with the temperatures estimated for the epidote + chlorite assemblage developed during the hydrothermal alteration. They are interpreted as the result of a retrograde diagenesis episode promted by low-temperature, late-stage hydrothermal fluids or by the interaction between rocks and groundwater after uplift.

Registro:

Documento: Artículo
Título:Mineralogical and microstructural characterization, and post-depositional history of La Aguadita Formation, Famatina System, La Rioja, Argentina
Autor:Collo, G.; Do Campo, M.; Astini, R.A.
Filiación:Cátedra de Estratigrafia y Geología Histórica, Universidad Nacional de Córdoba, Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina
Instituto de Geocronología y Geología Isotópica, Universidad de Buenos Aires, Pabellón INGEIS, 1428 Buenos Aires, Argentina
Palabras clave:Argentina; Berthierine; Clay minerals; Famatina system; Low-grade metamorphism; Ordovician; Retrograde diagenesis
Año:2005
Volumen:22
Número:3
Página de inicio:283
Página de fin:297
Título revista:Revista Mexicana de Ciencias Geologicas
Título revista abreviado:Rev. Mex. Cienc. Geol.
ISSN:10268774
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10268774_v22_n3_p283_Collo

Referencias:

  • Aceñolaza, F.G., Lech, R.R., Geología del Neopaleozoico sedimentario de la Sierra de Paimán, Provincia de La Rioja, Argentina (1996) Geología Del Sistema De Famatina, 19, pp. 97-101. , Aceñolaza, F.G, Miller, H., Toselli, A.J. (eds.), Münchner Geologische Hefte, (Reihe A)
  • Astini, R.A., El Ordovícico en la región central del Famatina (provincia de La Rioja, Argentina); aspectos estratigráficos, geológicos y geotectónicos (1998) Revista De La Asociación Geológica Argentina, 53 (4), pp. 445-460
  • Astini, R.A., The Ordovician Proto-Andean basins (2003) Ordovician Fossils of Argentina, pp. 1-74. , Benedetto, J.L. (ed.), Córdoba, Argentina, Secretaría de Ciencias y Tecnología, Universidad Nacional de Córdoba
  • Astini, R.A., Dávila, F.M., Ordovician back arc foreland and Ocloyic thrust belt development on the western Gondwana margin as a response to Precordillera terrane accretion (2004) Tectonics, 23. , TC4008, doi:10.1029/2003TCOO1620
  • Astini, R.A., Dávila, F.M., Rapela, C.W., Pankhurst, R.J., Fanning, C.M., Ordovician back-arc clastic wedge in the Famatina Ranges; new ages and implications for reconstruction of the Proto-Andean Gondwana Margin (2003) Ordovician from the Argentina, 17, pp. 375-380. , Albanesi, G.L., Beresi, M.S., Peralta, S.H. (eds.), Serie Correlación Geológica
  • Astini, R.A., Dávila, F.M., Collo, G., Martina, F., La Formación La Aguadita. (Ordovćico medio-superior); su implicancia en la evolución temprana del Famatina y como parte del orógeno oclóyico en el noroeste argentino (2004) Revista De La Asociación Geológica Argentina, pp. 67-84. , Publicación Especial, Serie D
  • Barazangi, M., Isacks, B.I., Spatial distribution of earthquakes and subduction of the Nazca Plate beneath South America (1976) Geology, 4 (11), pp. 686-692
  • Bird, D.K., Spieler, A.R., Epidote in Geothermal Systems (2004) Reviews in Mineralogy and Geochemistry, 56, pp. 235-300
  • Brussa, E.D., Toro, B.A., Benedetto, J.L., Biostratigraphy (2003) Ordovician Fossils of Argentina, pp. 75-90. , Benedetto, J.L. (ed.), Córdoba, Argentina, Secretaría de Ciencias y Tecnología, Universidad Nacional de Córdoba
  • Cawood, P.A., Terra Australis Orogen; Rodinia breakup and development of the Pacific and Iapetus margins of Gondwana during the Neoproterozoic and Paleozoic (2004) Earth Science Reviews, 69 (3-4), pp. 249-279
  • Collo, G., Petrografía y Estructura de las Metamorfitas de Bajo Grado de la quebrada de Paimán; Provincia de La Rioja (2002), p. 64. , Córdoba, Argentina, Universidad Nacional de Córdoba, Escuela de Geología, trabajo final; Dahlquist, J.A., Rapela, C.W., Pankhurst, R.J., Baldo, E.G., Saavedra, J., Alasino, P.H., Los granitoides de la Sierra de Chepes y su comparación con granitoides paleozoicos de Sierras Pampeanas; Implicancias para el Orógeno Famatiniano (2004) Revista De La Asociación Geológica Argentina, pp. 87-108. , Publicación Especial, Serie D
  • Dávila, F.M., Las milonitas de Angulos: Una faja de cizalla dúctil con cinemática normal en el Sistema de Famatina (2001) Avances En Microtectónica, 5, pp. 113-116. , Asociación Geológica Argentina, Publicación Especial
  • Dávila, F.M., Transecta Estratigráfica-Estructural a los 28°30'28°45' de Latitud Sur, Sierra de Famatina, Provincia de La Rioja, Argentina (2003), p. 516. , Códoba, Argentina, Universidad Nacional de Córdoba, tesis doctoral; Dávila, F.M., Astini, R.A., Schmidt, C.J., Unraveling 470 m.y. of shortening in the Central Andes and documentation of type 0 superposed folding (2003) Geology, 31 (3), pp. 275-278
  • De la Calle, C., Suquet, H., Vermiculite (1991) Hydrous Phyllosilicates: Reviews in Mineralogy, 19, pp. 455-496. , Bailey, S.W. (ed.)
  • Do Campo, M., Nieto, F., Transmission electron microscopy study of very low-grade metamorphic evolution in Neoproterozoic pelites of the Puncoviscana formation (Cordillera Oriental, NW Argentina) (2003) Clay Minerals, 38, pp. 459-481
  • Do Campo, M., Nieto, F., Origin of mixed-layered (R1) muscovite-chlorite in an anchizonal slate from Puncoviscana formation (Salta Province, Argentina) (2005) Clay Minerals, 40, pp. 317-332
  • Durand, F.R., Aceñolaza, F.G., Caracteres faunísticos, paleoecológicos y paleogeográficos de la Formación Puncoviscana (Precámbrico superior-Cámbrico inferior) del Noroeste Argentino; el Ciclo Pampeano en el Noroeste Argentino (1990) Serie Correlación Geológica, 4, pp. 71-112
  • Durand, F.R., Aceñolaza, F.G., Esteban, S.B., El Proterozoico superior y Cámbrico inferior metasedimentario de la región de Bordo Atravesado y extremo norte de la Sierra de Paimán, Sistema de Famatina, Provincia de La Rioja (1992) Serie Correlación Geológica, 9, pp. 31-40
  • Durand, F.R., Toselli, A.J., Aceñolaza, F.G., Rossi de Toselli, J.N., Evolución geológica del Sistema de Famatina durante el Precámbrico y Paleozoico (1994), 14, p. 76. , Tucumán, Argentina, Universidad Nacional de Tucumán, Facultad de Ciencias Naturales e Instituto Miguel Lillo, Serie Monográfica y Didáctica; Ezpeleta, M., Dávila, F.M., Astini, R.A., Geoformas relictuales de la glaciación Gondwánica en el extremo sur de la Sierra de Velazco, Sierras Pampeanas Noroccidentales, Argentina (2003) Il Congreso Nacional De Cuaternario Y Geomorfología, Actas, pp. 267-274. , Tucumán, 22-24 de septiembre Tucumán, Argentina, Instituto de Geociencias y Medio Ambiente, Universidad Nacional de Tucumán
  • Finney, S., Gleason, J., Gehrels, G., Peralta, S., Aceñolaza, G., Early Gondwanan connection for the Argentine Precordillera terrane (2003) Earth and Planetary Science Letter, 205, pp. 349-359
  • Guggenheim, S., Bain, D., Bergaya, F., Brigatti, M., Drits, V., Eberl, D., Formoso, M., Watanabe, T., Order, Disorder and Crystallinity in Phillosilicates and the use of the "Crystallinity Index" (2002) Clays and Clay Minerals, 50, pp. 406-409. , Report of the Association International pour L'Etude Des Argiles (AIPEA) Nomenclature Committee for 2001
  • Hatcher Jr., R.D., (1995) Structural Geology. Principles, Concepts, and Problems, pp. 350-378. , Englewood Cliffs, New Jersey, Prentice Hall
  • Höckenreiner, M., Söllner, F., Miller, H., Dating the TIPA shear zone: An Early Devonian terrane boundary between the Famatinian and Pampean systems (NW Argentina) (2003) Journal of South American Earth Sciences, 16, pp. 45-66
  • Jiang, W.T., Peacor, D.R., Microstructures, mixed layering, and polimorphism of chlorite and retrograde berthierine in the Kidd Creek masive sulphide deposit, Ontario (1992) Clays and Clay Minerals, 40, pp. 501-514
  • Jiang, W.T., Peacor, D.R., Prograde transitions of corrensite and chlorite in low-grade pelitic rocks from the Gaspe Peninsula, Quebec (1994) Clays and Clay Minerals, 42, pp. 497-517
  • Jiang, W.T., Essene, E.J., Peacor, D.R., Transmission electron microscopic study of coexisting pyrophyllite and muscovite; direct evidence for the metastability of illite (1990) Clays and Clay Minerals, 38, pp. 225-240
  • Kisch, H.J., Illite crystallinity; recommendations on sample preparation, X-ray diffraction settings, and interlaboratory samples (1991) Journal of Metamorphic Geology, 9, pp. 665-670
  • Knipe, R.J., The interaction of deformation and metamorphism in slates (1981) Tectonophysics, 78, pp. 249-272
  • Kübler, B., Evaluation quantitative du mitamorphisme par la cristallinité de I'llite; etat des progres reatises ces dernieres annees (1968) Bulletin Du Centre De Recherches De Pau-Societe Nationale Des Petroles D'Aquitaine (SNPA), 2, pp. 385-397
  • Limarino, C., Gutiérrez, P., Diamictites in the Agua Colorada Formation (Northwesten Argentina); new evidence of the Carboniferous glaciation in South America (1990) Journal of South American Earth Sciences, 3 (1), pp. 9-20
  • Merriman, R.J., Peacor, D.R., Very low grade metapelites; mineralogy, microfabrics and measuring reaction progress (1999) Low-Grade Metamorphism, pp. 10-60. , Frey, M., Robinson, D. (eds.), Oxford, Blackwell Science
  • Moore, D.M., Reynolds, R.C., X-Ray Diffraction and the Identification and Analysis of Clay Minerals (1997), p. 378. , Oxford, Oxford University Press; Nieto, F., Peacor, D.R., Regional retrograde alteration of prograde pelite sequences to lower grade hydrated assemblages (1993) Terra Abstract, 5, p. 419
  • Nieto, F., Velila, N., Peacor, D., Ortega Huertas, M., Regional retrograde alteration of sub-greenschist facies chlorite to smectite (1994) Contributions to Mineralogy and Petrology, 1151, pp. 243-252
  • Nieto, F., Mata, P.M., Bauluz, B., Giorgetti, G., Árkai, P., Peacor, D.R., Retrograde diagenesis, a widespread process on a regional scale (2005) Clay Minerals, 40, pp. 93-104
  • Ogg, J.G., Status of Divisions of the International Geologic Time Scale (2004) Lethaia, 37, pp. 183-199
  • Passchier, C., Trouw, R.A.J., (1998) Microtectonics, p. 289. , New York, Springer
  • Pérez, W., Kawashita, K., K/Ar and Rb/Sr geochronology of igneous rocks from the Sierra de Paimán, northwestern Argentina (1992) Journal of South American Earth Science, 5, pp. 251-264
  • Ramsay, J.G., Huber, M.I., (1987) The Techniques of Modern Structural Geology, p. 700. , Academic Press
  • Rossi, J.N., Durand, F.R., Toselli, A.J., Sardi, F.G., Aspectos estratigráficos y geoquímicos comparativos de basamento metamórfico de bajo grado del Sistema de Famatina, Argentina (1997) Revista De La Asociación Geológica Argentina, 52 (4), pp. 469-480
  • Sardi, F.G., Rossi de Toselli, J.R., Caracteres petrográficos del stock granítico de Potrerillos y su depósito de W-Mo-Sn asociado, Sistema de Famatina, La Rioja, Argentina (2000) Zentralblatt Für Geologie Und Paläontologie, (PART 1), pp. 883-894
  • Steenken, A., Wemmer, K., López de Luchi, M.G., Siegesmund, S., Pawlig, S., Crustal provenace and cooling of the basement complexes of the Sierra de San Luis; an insight into the tectonic history of the proto-Andean margin of Gondwana (2004) Gondwana Research, 7 (4), pp. 1171-1195
  • Toselli, A.J., Saavedra, J., Durand, F.R., Rossi de Toselli, J.N., Pellitero, E., Lamprófiros del Sistema de Famatina (1996) Geología Del Sistema De Famatina, 9, pp. 275-281. , Aceñolaza, F.G., Miller, H., Toselli, A. (eds.), Münchner Geologische Hefte, Reihe A
  • Warr, L.N., Rice, A.H.N., Interlaboratory standarization and calibration of clay mineral crystallinity and crystallite size data (1994) Journal of Metamorphic Geology, 12, pp. 141-152

Citas:

---------- APA ----------
Collo, G., Do Campo, M. & Astini, R.A. (2005) . Mineralogical and microstructural characterization, and post-depositional history of La Aguadita Formation, Famatina System, La Rioja, Argentina . Revista Mexicana de Ciencias Geologicas, 22(3), 283-297.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10268774_v22_n3_p283_Collo [ ]
---------- CHICAGO ----------
Collo, G., Do Campo, M., Astini, R.A. "Mineralogical and microstructural characterization, and post-depositional history of La Aguadita Formation, Famatina System, La Rioja, Argentina " . Revista Mexicana de Ciencias Geologicas 22, no. 3 (2005) : 283-297.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10268774_v22_n3_p283_Collo [ ]
---------- MLA ----------
Collo, G., Do Campo, M., Astini, R.A. "Mineralogical and microstructural characterization, and post-depositional history of La Aguadita Formation, Famatina System, La Rioja, Argentina " . Revista Mexicana de Ciencias Geologicas, vol. 22, no. 3, 2005, pp. 283-297.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10268774_v22_n3_p283_Collo [ ]
---------- VANCOUVER ----------
Collo, G., Do Campo, M., Astini, R.A. Mineralogical and microstructural characterization, and post-depositional history of La Aguadita Formation, Famatina System, La Rioja, Argentina . Rev. Mex. Cienc. Geol. 2005;22(3):283-297.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10268774_v22_n3_p283_Collo [ ]